The noun blue has 7 senses (first 4 from tagged texts)
1. (9) blue, blueness -- (blue color or pigment; resembling the color of the clear sky in the daytime; "he had eyes of bright blue")
2. (9) blue -- (blue clothing; "she was wearing blue")
3. (3) blue -- (any organization or party whose uniforms or badges are blue; "the Union army was a vast blue")
4. (1) blue sky, blue, blue air, wild blue yonder -- (the sky as viewed during daylight; "he shot an arrow into the blue")
5. bluing, blueing, blue -- (used to whiten laundry or hair or give it a bluish tinge)
6. amobarbital sodium, blue, blue angel, blue devil, Amytal -- (the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic)
7. blue -- (any of numerous small butterflies of the family Lycaenidae)
Overview of verb blue
The verb blue has 1 sense (no senses from tagged texts)
1. blue -- (turn blue)
Overview of adj blue
The adj blue has 8 senses (first 4 from tagged texts)
1. (49) blue, bluish, blueish -- (of the color intermediate between green and violet; having a color similar to that of a clear unclouded sky; "October's bright blue weather"- Helen Hunt Jackson; "a blue flame"; "blue haze of tobacco smoke")
2. (13) blue -- (used to signify the Union forces in the American Civil War (who wore blue uniforms); "a ragged blue line")
3. (1) blue, depressed, dispirited, down, downcast, downhearted, down in the mouth, low, low-spirited -- (low in spirits; "lonely and blue in a strange city"; "depressed by the loss of his job"; "a dispirited and resigned expression on her face"; "downcast after his defeat"; "feeling discouraged and downhearted")
4. (1) blasphemous, blue, profane -- (characterized by profanity or cursing; "foul-mouthed and blasphemous"; "blue language"; "profane words")
5. blue, gamy, gamey, juicy, naughty, racy, risque, spicy -- (suggestive of sexual impropriety; "a blue movie"; "blue jokes"; "he skips asterisks and gives you the gamy details"; "a juicy scandal"; "a naughty wink"; "naughty words"; "racy anecdotes"; "a risque story"; "spicy gossip")
6. aristocratic, aristocratical, blue, blue-blooded, gentle, patrician -- (belonging to or characteristic of the nobility or aristocracy; "an aristocratic family"; "aristocratic Bostonians"; "aristocratic government"; "a blue family"; "blue blood"; "the blue-blooded aristocracy"; "of gentle blood"; "patrician landholders of the American South"; "aristocratic bearing"; "aristocratic features"; "patrician tastes")
7. blue, puritan, puritanic, puritanical -- (morally rigorous and strict; "blue laws"; "the puritan work ethic"; "puritanic distaste for alcohol"; "she was anything but puritanical in her behavior")
8. blue, dark, depressing, dingy, disconsolate, dismal, dispiriting, gloomy, grim, sorry, drab, drear, dreary -- (causing dejection; "a blue day"; "the dark days of the war"; "a week of rainy depressing weather"; "a disconsolate winter landscape"; "the first dismal dispiriting days of November"; "a dark gloomy day"; "grim rainy weather")